I want to sleep. (+20 points lol) question in image

i m sorry i dont know the answer

let me know if you need help

a. 3

b. -10

Hope this helps! I told ya how to do it in comments.

(I choose to write this here because one of the previous answers were deleted, SO i was capable of submitting the answer!)

answer: b.48 for

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)